Question

# Which of the following quantities is always negative in SHM?

A
F.a
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
F.r
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
v.r
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
a.r
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution

## The correct options are C →F.→r D →a.→rSince force and acceleration is always in opposite direction of displacement. so the dot product of displacement →r with →F and →a is always smaller than zero. ⇒ B and D are correct Force and acceleration are always in same direction so dot product of →F and →a is always greater then zero. ⇒ A is incorrectVelocity and displacement are not always in the same direction so dot product of →v and →r is sometimes greater then zero and sometimes less then zero ⇒ C is incorrect

Suggest Corrections
0
Related Videos
Friction: A Quantitative Picture
PHYSICS
Watch in App
Explore more